Scenario: two companies negotiate by email; one sends a signed contract as a scanned PDF, the other replies «agreed, proceed» — goods are delivered and invoiced. When a dispute erupts, one side claims «we never signed any paper contract». So is an email/scan agreement legally valid, and how much is it worth in court?
The framework: data messages are not «second-class»
The Law on Electronic Transactions 20/2023/QH15 (in force from 1 July 2024, replacing the 2005 law) establishes the principle that a data message is not denied legal effect merely because it is a data message, and an electronic document meeting conditions of integrity, accessibility and identifiable origin has the value of a paper document. The Civil Code 91/2015/QH13 (Article 119) likewise recognises written form as including electronic form under e-transactions law.
On formation: an email chain can constitute offer and acceptance under the Civil Code 2015 — one side sends a draft with specific terms, the other accepts unconditionally, and a contract is formed although nobody printed and hand-signed it. Subsequent performance (delivery, receipt, part payment) further confirms that a contract exists.
Where a scan sits on the evidence ladder
Separate three tiers businesses often blur: (i) the original paper with wet signatures — the strongest evidence; (ii) a proper electronic/digital signature — equivalent to paper under the 2023 law; (iii) a scan — essentially an image of a signature and document, which cannot by itself prove integrity: anyone can paste a signature image into another file. In a real dispute, a scan usually needs the original for comparison, or reinforcement by the original email chain (with server data), performance documents and party testimony.
In other words, an email/scan contract is valid but its probative strength in a fight is lower than a digitally signed or original-paper contract. Most losses in this area are not «there was no contract» losses — they are «we could not produce a trustworthy original data chain» losses.
Making electronic deals as hard as paper
- Use trusted e-signatures/digital signatures for high-value contracts instead of signing by hand and scanning;
- Preserve the original email chain (not just downloaded attachments): keep headers and server mailboxes — that is the data proving origin and timing;
- Close with a consolidating document: after email exchanges, sign one complete contract or a confirmation addendum — «the email agreements from … to … are consolidated into this document»;
- For signed scans: require the original to follow by courier within a set period, and write that duty into the agreement itself — building evidence discipline from the start.
Frequently asked questions
Is a contract signed via email or scan legally valid?
Yes. The Law on Electronic Transactions 20/2023/QH15 recognises the legal effect of data messages and e-transactions, and an email chain can form a contract under the Civil Code 2015. But a scan is only an image of a signature — weaker evidence than an original or a digital signature, needing the original email chain and performance documents behind it.
The other side denies signing because «it was only a scan» — what then?
The denying party faces the whole evidence chain: original emails from its own mailbox, delivery and receipt, invoices, payments. Courts assess the totality; a scan alone is weak, but a scan plus a consistent performance chain is a strong proof file.
How do a scanned signature and a digital signature differ?
A scanned signature is an image of a handwritten signature pasted into a document — no technical integrity guarantee. A digital signature is created with a private key tied to a certificate from a certification provider, letting anyone verify the signer and detect any post-signing change — hence its paper-equivalent value under e-transactions law.
What signing form is safest for large transactions?
Prefer a digital signature by the authorised person, or wet-signed originals with proper seal and filing. Email/scan suits order confirmations, small addenda and progress steps — but the master high-value contract should be perfected in one of the two stronger forms.
Related articles
- Evidence in FDI Arbitration: Effective Collection and Presentation
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- Valuation Disputes Upon Shareholder Exit in Vietnam: Independent Appraisal and Expert Mechanisms
- Seller Warranties in Vietnamese Stake Sales: Scope and Limits
- SIAC vs HKIAC vs VIAC: Picking an Arbitration Center for FDI Contracts
This legal analysis has been verified against current Vietnamese regulations and cross-border FDI transaction practices by the attorneys at FLAT LAW FIRM.
